1 Features
• Configured for a wide range of applications
– 3-V to 17-V input voltage range
– 0.6-V to 10-V output voltage range
– 0.6-V reference voltage
– ±1% reference accuracy at 25°C
– ±1.5% reference accuracy at –40°C to 125°C
– Integrated 55.0-mΩ and 24.3-mΩ MOSFETs
– 100-μA low quiescent current
– 1.2-MHz switching frequency
– Maximum 95% large duty cycle operation
– Precision EN threshold voltage
– 1.6-ms fixed typical soft-start time
• Ease of use and small solution size
– TPS563252 Eco-mode, TPS563257 FCCM
mode at light loading
– D-CAP3™ control mode
– Easy layout with integrated bootstrap capacitor
– Support start-up with prebiased output
– Open-drain power-good indicator
– Non-latch for OV, OT, and UVLO protection
– Hiccup mode for UV protection
– Cycle-by-cycle OC and NOC protection
– 1.6-mm × 1.6-mm SOT-563 package
• Create a custom design using the TPS563252 with
the WEBENCH® Power Designer
• Create a custom design using the TPS563257 with
the WEBENCH® Power Designer

2 Applications
• WLAN/Wi-Fi access point, switch, router
• Pro-audio, surveillance, drone
• TV, STB and DVR, smart speaker

3 Description
The TPS56325x is a simple, easy-to-use, high
efficiency, high power density, synchronous buck
converter with input voltage ranging from 3 V to 17
V and supports up to 3-A continuous current at output
voltages between 0.6 V and 10 V.
The TPS56325x employs D-CAP3 control mode to
provide a fast transient response and to support
low-ESR output capacitors with no requirement for
external compensation. The device can support up
to 95% duty cycle operation. Integrated bootstrap
capacitor helps achieve single layer PCB and can
save total BOM cost.
The TPS563252 operates in Eco-mode, which
maintains high efficiency during light loading. The
TPS563257 operates in FCCM mode, which keeps
the same frequency and lower output ripple during
all load conditions. The device integrates complete
protection through OVP, OCP, UVLO, OTP, and UVP
with hiccup.
The device is available in 1.6 mm × 1.6 mm SOT-563
package. The junction temperature is specified from
–40°C to 125°C.